I need help with an Error

So my game has the error “TypeError: Cannot read property ‘title’ of undefined.” And I’ve made it so far in the game and this also carries to other game saves as well. What do I do?

And when I close it this appears

Uncaught node.js Error

TypeError: Cannot read property ‘id’ of null
at Object.TopicsSerializer.save (file:///D:/SteamLibrary/steamapps/common/Game%20Dev%20Tycoon/compressed/codeNw.js:1797:293)
at eval (file:///D:/SteamLibrary/steamapps/common/Game%20Dev%20Tycoon/compressed/codeNw.js:227:62)
at Array.map (native)
at a.save (file:///D:/SteamLibrary/steamapps/common/Game%20Dev%20Tycoon/compressed/codeNw.js:227:22)
at Object.b.save (file:///D:/SteamLibrary/steamapps/common/Game%20Dev%20Tycoon/compressed/codeNw.js:83:425)
at Object.b.autoSave (file:///D:/SteamLibrary/steamapps/common/Game%20Dev%20Tycoon/compressed/codeNw.js:89:198)
at Window.eval (file:///D:/SteamLibrary/steamapps/common/Game%20Dev%20Tycoon/compressed/codeNw.js:159:84)
at Window.EventEmitter.emit (events.js:92:17)
at Window.init.Window.handleEvent (window_bindings.js:148:13)
** at IDWeakMap.global.__nwObjectsRegistry.handleEvent (node.js:789:26)**

Do I need to edit my save?